Scraper



C. LE BLEU Oct. 28, 1941.

scRAPER Filed Feb. e, 1959 3 ShQets-Sheet l C. LE BLEU Oct. 28, 1941 SCRAPER Filed Feb. e, 1959 3 Sheets-Sheet 2 @www N w 3 n ww mw mw S w Y INVENTOR.

C. LE BLEU oci. 2s, 1941.

scRAPER Filed Feb. s, 1939 3 Sheets-Sheet I5 FIG. 5 60M FIG. 7

INVENTOR. @en/w o w Patented ct. 28, 1.941

UNITED STATES PATEN T oFFIcE SCRAPER- Charles Le Bleu, Los Angeles, Calif. Application February 6, 193;'9, Serial No. 254,851

14 claims. (o1.` a7` 126 This invention relates generally to material digging, scraping, leveling and transporting machines for use in leveling ground, building and maintaining roads, excavating, grading and transporting materials, and particularly to that class of material handling machines commonly known as scrapers by means of which material may be scraped up and moved, and is an improvement upon my co-pending application, Serial No. 756,492, filed December 7, 1934, now Patent No. 2,152,700, in which I `disclose a frame carrying a blade and a bowl, said bowl being swingableA relative to the frame and blade to dump the load rearwardly of the blade, and it is to be noted that the bowl is closed at its rear end and the material must be dumped through the intake opening, and furthermore, the bottom of the bowl inclines upwardly to a considerable degree toward itsrear end so that oncoming material must be forced up a sharp incline during the loading operation, which fact requires a greater pulling force tol load the bowl than would be the case if the bottom where disposed in a substantially horizontal position during the loading operation. The fact that the bowl is closed on all sides except at the intake opening is also a disadvantage since the material becomes packed to the extent that it is diicult to dump the load. This invention is also an improvement upon my copending application, Serial No. 200,919, filed April 8, 1938, now Patent No. 2,223,829, in which I` disclose a bowl support having ground wheels swingably mounted on the rearv end thereof, an upstanding arm disposed forwardly thereof, and upon which the forward end of said bowl support is mounted for vertical movement relative thereto, a plurality of vertically spaced sheaves mounted on said post and a cable attached at an end to said bowl support and passing thence about said sheaves to a connection with said swingablyA mounted ground wheels behind said bowl support, and one of the objects of this invention is to simplify the above structure by eliminating said plurality of sheaves on the upstanding arm, and anchoring the cable to the upstanding arm rather than to the bowl support as shown in the above mentioned application,

Another object of this invention is the provision of a frame, a scraper blade supported on said frame, a bottom movably supported behind said scraper blade in a position to receive material scraped up thereby, said bottom being in substantially a horizontal position during'the loading operation, and means yfor movingsaid bottom relative to said frameand blade to dump the load behind said blade. i

Another object of this invention is the provision of a frame, earth-scraping mearssupported on said frame, a bowl movably supported behind said earth-scraping means in a position to receive material ing adapted to receive material through its front endanddischarge material through its rear end, and means applied to said bowl to to move relative to said frame and said earthscrapingmeans to discharge its load behind said earth-scraping means. .y

Still another object of this invention the provision of amain bowl, an auxiliary bowl in front-of lsaid main bowl and arranged relative thereto to serve -as a closureV said main bowl, both bowls being adapted to discharge material directlyonto the ground at their rear ends. l Still another object of my invention is the provision of a main bowl,` an auxiliary bowl in front of said main bowl andrarranged relative thereto to bey loaded in conjunction with said main bowl, both bowls being adapted to discharge material directly onto the ground at their rear ends.

.Another object of my invention is theprovision lof improvements blades. l

,Still another object -of this invention is the provision of downwardly curved earth scraping means and an`earth supporting bottom behind said earth-scraping means to receive earth scraped' up thereby, said bottom being curved-tol the curvature of said conform substantially to downwardly curvedearth-scraping means.

. 4Still other objects, features, and advantages ofv my invention Awill be apparent to those skilled in the rart upon detailed drawings and the following specifications, wherein I exemplify and describe a preferred embodi-v ment of` my invention, but it is to be understood that my invention as'herein exemplified and demodification in the com-` bination, correlation and construction 'of parts,.

scribed is susceptible to members, and features, without departingfrom the spirit of lmy invention annexed claims.

In the drawings:

Figure l -is a top plan view of vmy invention` showing parts in load carrying position.

Figure 2 isa side elevation of my invention showing parts in carrying position. y Figure 3 is a fragmentary side elevation of my invention showing the bowls in dumping position.

Figure4 is a side elevation lin section taken on broken line 4-4 of Figure l showing parts in loading position.

vigure Vis an enlarged top plan View `of the auxiliary bowl detached from the machine.

Figure 6 is a fragmentary lfront view in elevatiorV `showing the construction ofthe blade suppor. ,i y

scraped up thereby, said bowl because the same for the front end of in supports for scraper perusal of the attachedy as defined in the Figure 1 is a front view in elevation of the main bowl showing the curved bottom.

Referring now more particularly to the draw-` ings, a frame IIJ comprises spaced apart parallel side walls II, "rigidly connected byv transverse beams I2 andl I3, land a transverse scraper sup-- port I4, provided with a scraper I4'. Side walls II'are provided with beams I5, rigid therewith; and converging at their forward ends to a rigid connection with a transverse beam I6. ySpacedv apart parallel beams I1 are rigidjat theirrear ends with transverse beam I6 and are provided at their forward ends, on theirconfrontingsides,

each with a pairof vertically spaced trunnions I8 upon each of whichis journaled a roller I9.

f pony truck-28 is disposed beneath the forward'endof parallelbeamsH and is provided with 'fa-draft tongue-'2| `adapted at its forward end "as/shown for connection to a draft device.

4Ariupstanding arm 22 is ldisposed between beams' I1 adjacent their front ends and is articulately, see Figure 5, mounted at itslower end on, and-opstanding from', the pony'truck 20,'

arid is provided'with grooves 23' extending longitudinally thereof and into which trunnions I8 carrying 'rollers t9 project. l'rire forward errd of frame I0 is thus mounted for up and down movement lon upstanding arm 22. v.

' 'I he upper end of said upstanding arm 22, is

provided as shown with transversely spaced vertic'arsheaves24.v

`The ifdrward and @iframe m is provided with transversely 'spaced' brackets 25 carrying a pin 26-`upon which are journaledvertical sheaves 21,

sheaves 21 and being arranged relative one 4 I ing arms 34 rigid at their lower ends therewith,

and provided at their upper ends witha pin 35.

A-roller-136 is: disposed between arms 34 vand Jourr'i'alled on pin 135. '.Thu's, a rear wheeled truck 38 is mounted-:fon'fra'me I8 for swinging vmovement, relative thereto.

Alpair' of laterally spaced arms .31 vare rigid at Vtheir forward ends with frame I0, and are providedat theirfre'ar ends with a pin 38. A

pulley wheel 39 isdisposed between the rear ends of arms 31 and journaled on pin 38.

f A pair of vlaterally spaced brackets 40 are rigid with frame 'I8 and support a pin 4I upon which is journaled a pulley wheel 42.

Parallel beams I1 support a pinv 43 upon which is journaled; a pulleybwheel "44 as shown. `A`A tubular rrierriloerA 45 is rigid at its forward end with .parallel beams I'1 and at its rear end with brackets 48,'A f

A cable '4t' pass siabdut'rdiier lat as shwfnd Y bothendsofsaid'cable pass 4thence about pulley wheels 39,42 and 44 4, as shown, and both ends are "adjustably anchored in a i'larnpV 41 carried j by upstanding arm'22, se'e'Fi'gure 4.

It is readily seen that cable 28 inay'b'e'manipulated "tofraise and lower the forward end of frame im," randbeca'use'o'f the application of cable j 4'5 'to upstanding -arms -22 Aand 34 'and its association with frame I0, itis clear that vertli-y `cal movementI of frame I8 on upstanding arm 22 will automatically operate cable 46 to swing wheeled truck 30 and thus cause a similar movement of the rear end of frame I8, and since the mechanical value of arms 3I and 34 is substantially equal, it follows that manipulation of cable 28 will result'in -raising frame I0 substantially without tilting it.

q back wall 48 is rigid at its ends with side walls II, and intermediate its ends with transverse beam I2 and brackets 33, and is provided at (itslowerj edge with a spreader blade 49.

Before describing the bowls and their oper- Aation, more should be said about scraper support I4, seeFigure 6, which 'comprises a downwardly curved hollow beam I4 as shown and is supported at -its ends on side walls I I. -A relatively straight rigid '-rnember 50 -pass'es through the opening through said 'beam and is also secured at its ends to sidewalls Il. A -blade I4 Vis detachably' secured -to beam I4. The reasons for this cohstruction of beam I4 isas follows; lfirst, the deeper the out at the center of the blade, the better the dirt moves back into the bowl; secondly, when a blade-support fails,`it usually bendsupwardly betweenfits ends due to a force from below, such asa large rock over which vthe blade slides thusr concentrating the loaded lweight of the machine on vthat portion ofthe blade in contact with 4the rock.

A main bowl v5'I comprises a bottom 52 and hangerplate `53 disposed one at each side of said bottom and to the lower edge of which said bottom is secured, saidhanger plates 53 beingV pivotally supported on frame I0 at 54 as shown.

VThe -`main bowl "5l" iS thus pivbtally Supported infa position behind said scraper blade to re'- Vceive 'material scraped up thereby. Each of the hanger plates '53 is yprovided "with a projection 55 rigid therewith and extending laterally through openings 58 'provided in each of 'the side walls II, trunnions 55 each having sheave means 51 journaled thereon.

An auxiliary-bowl 58'is disposed forwardly of Y scraper blade I4' andfi's provided at each of its ends With varms 158 rigid vtherewith and extendinfg thence upwardly to va pivotal connection .withf-ra-me Vill at BEI, each of said armsbeing provided intermediatetheir ends with a pin 6I having journaled thereon, Vsheave means 52. Thus,the-auxiliary bowl 58 isdisposed forwardly of the scrapper blade I4 and arranged relative thereto to -be loaded in conjunction Vwith ythe mainy bowl, that is y'to say, when thermainbowl has :become loadedfthe l'dirt subsequently scraped up tends -tomove upwardly and then fall forwardh7 into 4the auxiliary bowl.

The-following sheaves are journaled upon pins carried by frame I8 as shown, and are'located as follows; vieWingFigure 2, sheaves 63 are located directly above auxiliary bowl 58;. sheaves 64, just above scrapersupport I4; sheaves 6.5, on the top side'of transverse-beamk I 6; and sheave 66 is located near the lower rear corner of'frame I0`and projectsv through an opening provided in sidewall II. -Viewing Figure 3, sheaves V61, 58, and 68 are located above transverse beam I8; sheaves '10 andf1,l-justfrearwardly of transverse beam; I6.; 4sheave 12 justj above and Vslightly rearwardly 'of'scra'per lsupport I4; sheave 13, islo-V cated near the lowerrear corner of frame ID and projects through anopening provided in sidewallll.

Beginning vnow with Figure 3, a cable 14 is anchored tio-bo l Support I8 v"at 15, andpa'sses thence yback "and forth about'sheave's "51 fand12 a'nd thence to and about sheave 13, thence to and about sheave 66, see Figure 2, and thence back and forth about sheaves 51 and 64, and thence tol sheaves 63, thence back and forth about sheaves 63 and 62, and thence to and about sheave 65, thence transversely of frame I0, see Figure 1, to and about sheave 69, thence rearwardly to sheave 1|, thence downwardly to, see Figure 3, and then upwardly about sheave 62, thence to and about sheaves 10, 68 and 61 respectively, and thence over sheave 16 journaled on a pin 1-1 carried on the forward end of one of the parallel beams I1. Cable 14 may then extend to a winding drum, not shown.

Being in the carrying position of Figure 2,

with bowls and 58 loaded, the machine is drawn to the place where the load is to be dumped and a pulling force is applied to cable 14. This will result in rst swinging the auxiliary bowl 58 to the position shown in Figure 3, the main bowl 5| remaining in the position shown in Figure 2. But a continued application of the pulling force to cable 14 `will then result in swinging the main bowl 5| to thedumping position shown in Figure 3, the material moving out at the rear end of bowl 5| directly onto the ground behind the blade I4. `Thus, cable 14,is applied to both bowls, and a pulling force applied to cable 14 results in dumping the bowls at their rear ends in predetermined order. Being in the dumping position of Figure 3, the material dumped by bowls 5| and 58 may be spread to the desired thickness by proper manipulation of .cable 28 to position frame I8, and consequently, spreader blade 49 the desired distance from the ground y Being in the position of Figure 3, the bowls 5| and 58 may be returned to the position of Figure 2, by releasing cable 14, and the bowls will automatically return by gravity to the position of Figure 2, in which position the machine is drawn to the place where a load is to be gathered.

Being in the position of Figure 2, the machine may be caused to assume the loading position of Figure4` by again applying a pulling force to cable 14 until bowl 58 has been raised to the position, or a similar one, shown in Figure 4, in which position itmay be maintained by cable 14, the' bowl 5| remaining in its lowermost posif tion with respect to frame I0. Suitable manipulation of cable 28 may then be had to lower frame Il), and consequently, scraper blade I4 to a scraping contact with the ground as shown in Figure 4, and as the machine moves forward, the scraped up `material will be forced rearwardly into the main bowl 5| by the oncoming material until the bowl 5| is loaded, after which the oncoming material will move upwardly against the material in bowl 5| and then fall forwardly into auxiliary bowl 58. When both bowls are loaded, cable 14 is released to allow the auxiliary bowl 58 to close by gravity assisted by the load therein. However, the auxiliary bowl will not, as a rule, completely close until suitable manipulation of cable 28 is had may not actually ybe Vin close contact .with blade 4'; but, practically speaking, will be closed suflciently to retain a suitable load of material in both bowls.

Referring now brieflyto Figure 7, it will be noted that the bottom 52 of main bowl 5| is curved downwardly to conform to the curvature of scraper support I4 shown in Figure 6.

From the foregoing description it will beI seen that I have exemplified and described such a device as substantially fulfills the objects of my invention as set forth, and what I claim as new and useful anddesire to secure by Letters Patent is: y i

1. In a scraper, a frame having spaced apart parallel side walls and means rigidly connecting vsaid side walls, a transverse scraper blade supported on said frame, a bowl including,` a bottom and hanger plates disposed at each side of said bottom and to which said bottom is secured, means pivotally supporting said hanger plates on said frame so as to support said bottom in loading position behind said scraper blade to receive materia1 scraped up thereby, an opening through each of said side walls, projections carried by said hanger plates in register with said openings, and means applied to said projections for swinging said bowl relative to said frame and blade to dump the material behind said blade, said hanger plates being adapted to close said openings in loading position of said bowl.

2. In a scraper, a frame, a main bottom, an auxiliary bottom disposed forwardly of said main bottom and arranged relative thereto to be loaded in conjunction with said main bottom, both of said bottoms being opera-bly disposed with said to raise frame |0 and scraper I4 from scraping contact with the ground, and as scraper blade I4' is thus raised the auxiliary bowl 58 will' move downwardly with respect to frame I0 resulting in retaining a load in both bowls. Continued suitable manipulation of cable 28 will eventually result in again disposing all parts in thel carrying position of Figure 2, except however, that the lower edge of auxiliary bowl 58 75 frame-and adapted to discharge material directly onto the ground at their rear ends, a transverse scraper blade disposed between the confronting ends of said bottoms for scraping up materials for loading the same and means applied to said bottoms to swing the same to separate positions one in front of the other and inclining downwardly at their rear ends so as to [dump material from each -of said bottoms directly onto the ground at their rear ends, a spreader blade c-arried by said frame rearwardly of said bottoms for spreading the materials dumped from said bottoms. and means for raising and lowering said frame so as to selectively position said spreader blade relative to the ground thereunder.

3. In a scraper, a wheel supported frame, a transverse scraper blade supported on said .fr-ame, a main bowl, means pivotally supporting said main bowl on said frame in a position behindV said scraper blade to receive material scraped up thereby, an auxiliary bowl disposed forwardly of said scraper blade and arranged relative thereto to be loaded in conjunction with said main bowl, both bowls being adapted to dump material directly onto the ground at their rear ends, and means applied to said bowls to cause the same to dump in predetermined order.

4. In a scraper, a wheel suported frame, a transverse scraper blade supported on said frame, a main bowl, means pivotally supporting said main bowl in a position behind said scraper blade to receive material scraped up thereby, an auX- iliary bowl disposed forwardly of said scraper blade and arranged relative thereto to be loaded in conjunction 'with said main bowl, both bowls being adapted to dump material directly onto the ground at their rear ends, and means applied to said bowls to cause the same to 'dump in V`reverse order to that first above mentioned.

5. In a scraper, a Vwheel supported iframe, 'a transverse scraper blade supported on said frame, a main bowl, means pivotally supporting said main bowl in Ia position behind 'said scraper blade to receive material scraped up thereby, an auxiliary bowl disposed forwardly of said scraper bladeand arranged relative thereto to be loaded in conjunction with -said main bowl,.both bowls being adapted to dump material` vdirectly onto the ground at Ytheir rear ends, anda common operating means applied to said 'bowlsto cause the same t dump in a predetermined order.

6. In a scraper, a wheel supported frame, a transverse scraper blade supported on-said frame, a main bowl, means pivotally supporting said main bowl in a position behind said scraper blade to receive material scraped up thereby, an -auxiliary bowl, means pivotally supporting said auxiliary bowl in a position in front of said scraper blade to vbe loaded in conjunction with said main bowl, both bowls being adapted to dump material directly onto the ground at their rear ends, and means for swinging said bowls relative to said frame and blade to cause said .bowls to dump in predetermined order.

'7. In a scraper, a wheel supported frame, a transverse scraper blade supported on said frame, a main bowl, means pivotally supporting said main bowl in a position behind said scraper blade to receive material scraped up thereby, `an auX- iliary bowl, means pivotally supporting said auxiliary bowl in a position in front of said scraper blade to be loaded in conjunction lwith said main bowl, Iboth bowls being adapted to dump material directly onto the ground at their rear ends, and means for swinging said lbowls relative to said frame and blade to cause said bowls to dump in reverse order to that rst above mentioned.

8. In a scraper, a wheel supported frame, a transverse scraper'blade supported on said frame, a main bowl, means pivotally supporting said main bowl in a position behindsaid scraper blade to receive material scraped up thereby, an auxiliary bowl, means pivotally supporting said auxiliary bowl in a position in front of -said scraper blade to be loaded in conjunction with said main bowl, both 'bowls being adapted -to dump material` directly onto the `ground at theirrear ends,

vand a common operating means applied to said bowlsfor swinging the samerelative to said frame and blade to cause said bowls 'to vdump in predetermined order.

9. In a scraper, a frame, a transverse scraper blade supported on said "frame, a main bowl, means pivotally supporting said main bowl in a position behind said scraper blade to receive materials scraped up thereby, an auxiliary-bowl disposed forwardly of said scraper blade and arranged relative Athereto to be loaded in rconjunction with said main bowl, both bowls being adapted to dump materials directly onto the ground at their rear ends, and means vapplied to said bowls for causing the same to dump.

- l0. In a scraper, Ia wheel supported frame, a main bowl pivotally supported on said frame,an auxiliary bowl disposed forwardly of said main bowl and'confront-ing-the same so as tobe loaded in conjunction with said -main bowl both bowls being adapted to dumpmaterials directly onto the ground at their rear ends, a scraper blade disposed between the confronting ends of said bowls for scraping up vthe materials-'for loading the same, .and umeans applied -to said 'bowls to cause the same to dump directly onto the ground.

at their rear ends.

l1. In a scraper, a wheel supported frame, a main bowl operably'disposed'with said frame, an auxiliary bowl disposed forwardly of said main bowl 'and lconfronting the same so as to be loaded in conjunction with said main bowl, both .bowls being adapted to discharge materials directly onto theground at their rear ends, a transverse scraper blade arranged between tthe confronting ends of said bowls for scraping up material for loading the same, a spreader blade carried by said frame rearwardly ,of said bowls, means 'applied to said bowls for causing the same to dis-` charge through their rear ends each directly onto the ground forwardly of said spreader blade, and means for raising and lowering said frame so as to selectively position said spreader blade relative to the ground thereunder.

12. In a scraper, a wheel 'supported frame, a main bowl pivotally supported on said frame, an auxiliarybowl disposed forwardly of said main bowl and confronting the same so as to be loaded in conjunction with said main bowl, vboth bowls being adapted to dump materials directly onto the ground at their rear ends, a scraper blade disposed between the confronting ends of said bowls for scraping up `the materials Afor loading the same, a .spreader blade carried by said frame rearwardly of said bowls, means-applied to said bowls to cause the same to dump in predetermined order through 'their read ends directly onto the ground forwardly of said spreader blade, and

means for raising `and lowering said frame so as to selectively position said spreader blade relative to the ground thereunder.

13. .In a scraper, awheelv supported frame, a main -bowl including a bottom and hanger plates disposed at each sideof said bottom and Ito which said bottom is secured, means pivotally supporting said hanger platesfrom said'frame, an auxiliary vbowl disposed vforwardly of said main `bowl and confronting `the 'same `-so as to be loaded in conjunction with s aid main bowl, said auxiliary.

bowl 'being provided with, rearwardly extending arms pivotally supported on said frame, both bowls being adapted yto dump materials directly onto the ground `at their `rear ends, a scraper blade disposed between the confronting 'ends of said bowls for scraping up the materials for loading the same, a spreader blade carried by said frame rearwardly of said bowls, means applied to said bowls ito cause the same to dump in predetermined order through their rear ends directly onto the 4ground forwardly of said vspreader blade, and means for raising and lowering said frame so as to selectively position said spreader blade relative vto the yground-thereunder.

14. In a scraper, a frame, a transverse scraper blade supportedV onsaid frame, a main bottom swingably supported on said frame behind said scraper vblade in position to receive materials scraped up thereby and adapted to dump materials directly onto the ground behind said scraper-blade, an auxiliarybottom swingably disposed forwardly of saidbl-ade and arranged relative theretoto be loaded in conjunction with said main bottom, said auxiliary bottom being adapted ,to dump materials directly onto the ground in front of said blade, and means applied fto said bottoms to swing the same in predetermined order into their respective dumping positions 'behind andin front of said blade.

CHARLES vLE BLEU. 

